Shoe-stitching-machine attachment.



F. E. BROWN.

SHOE SHTCHlNG MACHINE ATTACHMENT. APPLICATION FILED JULY 23, 1911.

1,272,910. Patented July m, 1918'.

amen/5oz WTE FRANK E. snows, or sea raancrsco, CALIFORNIA.

SHOESTITCHING-MACHINE ATTACHMENT.

Specification of Letters Patent.

Patented July 16, 1ll8.

Application filed July 23, 1917. Serial No. 182,254.

To all whom it may concern:

Be it known that I, FRANK E. BROWN, a citizen of the United States, andresident of San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements in Shoe-Stitching-hlachine Attachments, of which the following is aspecification.

This invention. relates to new and useful improvements in shoe stitchingmachines, and the primary object of the invention is to provide anattachment adapted to be applied to the needle plate of a conventionaland well known type of shoe stitching machine, that acts as a guard torender the channeling attachment on the needle plate inoperative. Thechanneling attachment 011 the needle plate of thewell known type of shoestitching machines to which this device is adapted to be applied, isonly for use, when the machine is stitching leather soles, as the samechannels the soles, and stitches in said channel. here it is desired tostitch a sole formed of some rubber composition, the channelingoperation is useless, and is detrimental to the stitching, as the sameis liable to pull through- My attachment comprises a guard means whichis adapted to be quickly applied m'er the needle plate, to cover up thechanneling knife, so that the machine is adapted to stitch rubbercomposition soles, as well as leather soles, with no material change tothe structure thereof.

Another object of the invention is to provide a device of thischaracter, which is easily and simply constructed, inexpensive tomanufacture, and one which will be very efficient in operation.

lVith these and numerous other objects in view, my invention consists ofthe novel features of construction, combination and arrangement of partswhich will be herein referred to and more particularly pointed out inthe specification and claims.

In the accompanying drawings:

Figure 1 is a longitudinal section through the guard plate, showing thesame in position over a needle plate; and

Fig. 2- is a detached perspective view of the needle plate and guardplate.

In describing my invention 1 shall refer to the drawing in which similarreference characters designate corresponding parts throughout theseveral views.

The numeral 1 designates a needle plate,

such as is ordinarily used on a certain well known type of shoestitching machine, said needle plate being provided with theconventional apertures 2 therein, through which fastening means arepositioned to secure the plate to the machine. One end edge of the plateis inclined as shown at 3, and adjacent the same is a transverselyextending elongated slot l, the purpose of which is obvious. The plate 1is provided adjacent one end of the slot 4, with an upstandingchanneling knife 5, which channels the shoe sole during the ordinaryoperation of the machine,

The above described parts, namely the needle plate and its constructionare of the conventional type used on the certain well known type ofmachine, and form no part whatsoever of my invention. My inventioncomprises primarily a guard means, which is adapted to be positionedover the needle plate, so as to render the channeling knife inoperative,whereby the machine is adapted for use in stitching soles of rubbercomposition.

,in spaced superposed relation above said needle plate. It is obviousthat the guard plate 6 is slightly larger than the needle plate, so thatthe downwardly bent flanges. will be disposed beyond the edges of saidneedle plate. The flanges will snugly cngage the edges of theneedleplate, so as to insure a positive engagement. between these parts.

In operation, when it is desired to obviate the use of the channelingattachmentor knife 5, so that the machine will stitch a rubbercomposition sole. without channeling the same. the guard plate (3 ispositioned over the noodle plate 1. the downwardly projecting flanges .lthereon. snugly engaging the side edges of the needle plate, so that thetop portion of the guard plate will be plate and stitched, without said;sole disposed in spaced superposed relation above said needle plate. Theslot 8 in the guard plate will aline with the slot 4 in the needleplate, so as the machine will be adapted to operate in the conventional.manner. When are necessary to hold the guard plate in position, as .thepressure of the sole on the' same, and the snug engagement between theplates will be sutlicient to accomplish this purpose, and hold the platein operative reof a shoe stitching machine,

of a guard plate lation.

' This attachment to a shoestitching machine will be found especiallyuseful in shoe repairing shops, that specialize on quick work,- that isrepairing the shoes while the customer waits. Heretofore to preventchanneling a rubber composition sole, it was necguard plate over theneedle essary to entirely remove the needle plate, but by the use ofthis attachment, it may be quickly covered, so as to prevent thecomposition sole from being channeled, thereby creating a great savin intime and labor. The attachment may e very economically formed from asingle piece of metal, of plainly simple construction. The attachment isapplied without the necessity of additional fastening means, it onlybeing necessary to place the plate, whereby the pressure of the shoethereon while being stitched, and the snug engagement between.

the downwardly extending flanges, and the needle plate will insure theattachment against accidental displacement.

- hereto.

may .be had, 1

change may be made in said structure as do not depart-from the spiritand-scope of the invention as, claimed.-

Having fully described my invention,

what I claim asnew,

and desire to secure by Letters-Patent is 1. The combination with aneedle plate an. upstanding channeling knife thereon, correspondinglyshaped to said needle plate positioned over the same ,in spaced super-"posed relation, and flanges on the edges'of sa'id guard late adaptedfor frictional engagement with the sides of the needle plate to holdsaid guard plate in position,

2. The combination with a needle plate of a shoe. stitching machinehaving an elongated aperture therein, a channeling knife disposedadjacent said aperture, of a guard plate adapted to be'positioned oversaid needle plate, said guard plate having an alining aperture therein,and downwardly projecting flanges on the edges of said guard plateadapted to hold the same in superf posed spaced relation above theneedle-plate,

whereby the channeling knife is rendered inoperative. v

In testimony whereof, I aiiix my s1gnature "FRANK E. BROWN.

(jopies o1 this patent may be obtained for five cents each, byaddressing the fcommissioner of Patents,

- Washington, D. 0.

